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Rochester Electronics LM2903N Environmental and export classification status description

The LM2903N is a dual comparator IC from Fairchild Semiconductor (now part of ON Semiconductor) that features two independent, high-speed comparators. It is designed for use in analog applications requiring the comparison of two input voltages and providing an output signal depending on the comparison. Functions - Dual Comparators: The LM2903N contains two separate comparator circuits that can be used independently. - Output Signal: Each comparator outputs a digital signal (high or low) based on the comparison of its inverting (-) and non-inverting (+) inputs. - Wide Supply Voltage Range: The IC operates within a wide supply voltage range, typically from 3V to 36V or ±1.5V to ±18V. - Open-Collector Outputs: The outputs are open-collector, which allows for wired-AND configurations and makes it easier to interface with various logic levels. Applications - Voltage Level Detection: Suitable for detecting specific voltage levels in various circuits. - Zero-Crossing Detectors: Used in AC applications to detect when the signal crosses zero volts. - Signal Conditioning: Useful for shaping and conditioning signals in analog applications. - Switching Applications: Can be employed in relay or motor control applications. Alternative Parts - LM393: A comparable dual comparator with a similar functionality but may have different electrical characteristics. - LM comparator series: Various other LM series comparators (e.g., LM124, LM139) can serve different needs based on specifications such as operating voltage, input characteristics, and speed. - TLV3701: A single comparator with fast response time, suitable for applications requiring low power consumption. Embedded Modules - Motor Control Modules: Modules that integrate the LM2903N for motor control feedback systems. - Signal Processing Boards: Boards that utilize comparators like LM2903N for signal processing tasks such as analog to digital conversion. Related Q&A 1. Q: What are the typical applications of the LM2903N comparator IC? A: The LM2903N is commonly used in voltage level detection, zero-crossing detection, signal conditioning, and switching applications, among others. 2. Q: What is the output type of the LM2903N? A: The LM2903N features open-collector outputs, which require an external pull-up resistor to function correctly, allowing for versatile connection options. 3. Q: Can I use the LM2903N in battery-operated devices? A: Yes, the LM2903N has a wide operating voltage range from 3V to 36V, making it suitable for battery-powered applications as long as the supply voltage is within that range. 4. Q: What is the difference between the LM2903N and the LM393? A: Both are dual comparator ICs, but the LM293 has different electrical characteristics and may not be interchangeable in all applications; it typically has a wider range of supply voltage and different response times. 5. Q: How can I configure the LM2903N in a circuit? A: The LM2903N can be configured by connecting the inverting and non-inverting inputs to the voltages you wish to compare, and the output can be connected to an LED, microcontroller, or other components to indicate the comparison result. This provides a comprehensive overview and answers related to the LM2903N comparator IC.